<template>
<div>
    <div class="search">
      <input type="text" placeholder="输入城市名或拼音" 
      class="search-input"
      v-model="keyword">
    </div>
    <div class="search-content" ref ="search"
     v-show='keyword'>
      <ul>
        <li class="search-item border-bottom"
          v-for="item of list"
          :key='item.id'
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show ='hasNodata'>
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>



<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
    name: 'CitySearch',
    data(){
      return{
        keyword:'',
        list:[],
        timer:null
      }
    },
  props:{
    cities:Object
  },
  watch:{
    keyword(){
      if(this.timer){
        clearTimeout(this.timer)
      }
      if(!this.keyword){
        this.list = []
        return
      }
      this.timer=setTimeout(() =>{
        const result =[]
        for(let i in this.cities){
          this.cities[i].forEach((value) => {
            if(value.spell.indexOf(this.keyword) > -1||
            value.name.indexOf(this.keyword) > -1){
              result.push(value)
            }
          })
        }
        this.list = result
      },100)
    }
  },
  mounted(){
    this.scroll = new Bscroll(this.$refs.search)
  },
  computed:{
    hasNodata(){
      return !this.list.length
    }
  },
  methods:{
        handleCityClick(city){
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    }
}
</script>




<style lang="stylus" scoped>
@import '~styles/quanjubianliang.styl'
  .search
    height .72rem
    padding 0 .1rem
    background $bgcolor
    .search-input
      box-sizing border-box
      width 100%
      color #666
      height .62rem
      line-height .62rem
      text-align center
      border-radius .06rem
      padding 0 .1rem
  .search-content
   z-index 1
   overflow hidden
   position absolute
   top 1.58rem
   left 0
   right 0
   bottom 0
   background #eee
   .search-item
    color #666
    line-height .62rem
    padding-left .2rem
    background #fff
   
</style>
